Industries Served

Level Transmitters Applications

An Ontario municipality deploys Portable flowmeters to solve flow rate discrepancies between sewage pump station effluent and lagoon influent flowmeters. Faced with suspension of construction permits due to flow rate uncertainty, the Township of North Glengarry called on Greyline Instruments to help troubleshoot two permanently installed flow meters.

A Surge Tank is used at the Okatokes Rec Centre Swimming Pool to regulate pool level. By monitoring level in a surge tank the non-contacting Greyline LIT25 Level Indicating Transmitter controls makeup water flow through a solenoid valve.

Turbidity is a measure of the loss of light transmittance through a liquid due to suspended particles. The more particles in the water, the murkier it looks or the higher the turbidity. This is a measure of the quality of the water. It is measured in units called Nephelometric Turbidity Units (NTU). Turbidity can be caused by run off after a heavy rain as erosion washes soil into a river or lake. It is often increased in the spring and fall when the water temperature at different levels in a lake change causing a turnover of those levels, bringing sediment, plants, and algae to the top.

Sewer Meters monitor sewage level and flow within the sewers. Benefits gained by sewer monitoring include:
(1) Detection of overflow conditions before overflow occurs thereby preventing hazardous environmental events.
(2) Detection of blocked sewer pipes, allowing quick and focused maintenance thereby reducing maintenance costs.
(3)Detection of over-used and under-used pipes for long term municipal planning.
(4) Monitoring of sewage flow in sensitive sites such as flow to the river or sea.
(5) Estimation of sewage flow for costing purposes and especially for pricing the use of public infrastructure by industrial plants.
The sewer meter solution consists of two main components:
(1) The fielded component includes GaugerGSM, an ultrasonic non-contact level sensor integrated with GSM cellular transmitter. The fielded component also includes accessories such as external battery pack.
(2) A web-based monitoring application for presenting data from all sewer sites.

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